Door opener



Sept. 9, 1930. 1,775,093

J. A. HEMRICH DOOR OPENER Filed Oct. 8, 1927 IZZY/Z72 for h fljfenriciz By &4;

Patented Sept; 9, 1930 PATENT OFFICE JOHN A. HEMRICH, OF SEATTLE, WASHINGTON DOOR OPENER Application filed October 8, 1927.

Thisiiwention relates to a method of effecting the separation of relatively movable members and more particularly to means for opening freight car doors, although certain features thereof may be employed with equal advantage for other purposes.

It contemplates more especially the provision of simple and inexpensive means for effecting the separation of relatively Sll(l able members, which serves a special purpose in opening car doors which are usually incapable of movement with facility.

One objectof the present invention the provision of a method of gradually efiecting the separation of relatively movable members.

Still another object is the provision of means for carrying a movable fulcrum capable of sustaining a member thereon to effeet the separation of relatively slidable members.

A further object is the provision of a member capable of being sustained in proximity to relatively slidable members to carry a movable fulcrum which serves to sustain a bar capable of pivotal movement relative thereto to effect the movement thereof.

A still further object is the provision of a fulcrum movable relative to a carrier for the purpose of sustaining a bar effective to impart a force with mechanical advantage to a member in the path thereof to effect its movement.

Other objects and advantages will appear from the following description of an illustrative embodiment of the present invention.

In the drawing:

Figure 1 is a perspective view showing the device in its application to relatively movable members for the purpose of effecting the separation thereof.

Figure 2 is a view in elevation of the device embodying features of the present invention.

Figure 3 is a sectional view taken substantially along line IIIIII of Figure 2.

A method embodying features of the present invention is exemplified by the structure selected for illustration which comprises an elongated rigid member 10, in this instance Serial No. 224,838.

stantially parallel to relatively movable members 14: and 15. The pointed projection 13 penetrates the member 1 1 to sustain the rigid member substantially parallel thereto in proximity to the member which, in this instance, constitutes a sliding door of a ire car 16.

A boss 17 of cylindrical configuration provided with an axially disposed bore 13 somewhat greater in diameter than the memher 10 to enable the sliding thereof relative thereto between the end caps 11 and 12 which M serve to limit the movement thereof. The boss 17 terminates in an extension 19 having the plane surface thereof disposed substan tially normal thereto, the extension 19 being provided with a bore or aperture 20 having the axis thereof disposed normal to the axis of the elongated member 10. The bore 19 serves to receive a bar or other implement 21 capable of being fulcrumed or pivoted therein so that the projecting extremity thereof may be introduced between the relatively slidable members 1% and 15 to enable the separation thereof responsive to the application of force on the other extremity 23 of the bar 21. It is to be noted that the attendant may apply such force in that one hand is available for such purposes.

To prevent movement of the boss 17 relative to the rigid member 10 when the lever or bar 21 is fulcrumed therein to impart movement to the relatively slidable members 14 and 15, a lug 24 is formed integral therewith intermediate the junction of the boss 17 and an extension 19 thereof below the rigid member 10 in axial alignment therewith. The lug much mechanical advantage.

24 serves to sustain the boss in its proper position relative to the rigid member 10 to Withstand its tendency to bend occasioned by the manipulation of lever 21. It will be apparent that the surface 25 of the lug 24 will contact with the rigid member 10 to create frictional reaction therebetween to: maintainthe boss 17 in'its proper position Whileithe bar or lever 21 is fulcruming Within the bore 20.

Subsequent to fulcruming the lever 21 to effect the separation of the member 1-5 relative to the member 14, the boss 1'? is capable of-being moved along the member 10 for any desired distance whereupon further separation of the member 15 is possible by manipulat-ing the bar 21, so that repeated movement of the boss 17 followed by oscillating or fulcruming'the bar 21 thereagainst will open the door step by step, therebyenabling the ape plication of force by the human. agency With Various changes may be made in the embodimentof the invention herein specifically described Without de iyerting from or sacrificing anyof the advantages thereof defined in the appended claims; I claim:

1. A door opener comprising an elongated rigid member; a boss slidable thereon; a

transversely perforated rigid extension on said boss and a lever bar passing through the perforation in said extension and engageable With a door or the like.

2. A door openercomprising an elongated Y rigid member having a pointed end; a boss slidable thereon; a transversely perforated rigid extension on saidboss; and a lever bar passing through the perforation in sair, e:- tension and engageable With a door or the like. 7 s

3. A door-opener comprising a rigid member, a boss on said rigid member, sustaining means onsaid boss, -a bar fulcrumed about said sustaining means for selective engagement With a door amb to elfectmovement of a door in juxtaposition thereto, and means on said boss to resist the bending thereof responsive to fulcruming said bar.

4. A door opener comprising a rigid mem-' ber adapted to be associated With a sliding door and for disposition substantially parallel thereto, a boss slidahle on said'rigid memher, a bar fulcrum'ed about said boss for disposition between said door and the jamb' therefor to effect movement therebet'ween relel thereto, a boss slidable on said rigid men her, a bar fulerumed about said boss for disposition between sa1d door and the amb therefor to effect movement therebtween responsive to fulcruming said bar,and a rib integral With said boss to effect the support thereof relative to said rigid member, and resisting bending stresses occasioned by ful- 

